document.write( "Question 390019: If M(-2,5) is the midpoint of AB and the coordinates of A are (4,7), what are the coordinates of B?\r
\n" ); document.write( "\n" ); document.write( "1) (1,6)
\n" ); document.write( "2) (-8,3)
\n" ); document.write( "3) (2,12)
\n" ); document.write( "4) (-8,6) \n" ); document.write( "

Algebra.Com's Answer #276552 by robertb(5830) $\"\"$ $\"About$

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$\"-2+=+%28x%2B4%29%2F2\"$ ===> -4 = x+4 ===> x = -8.
\n" ); document.write( " $\"5+=+%28y%2B7%29%2F2\"$ ===> 10 = x+7 ===> y = 3.
\n" ); document.write( "The answer is (2), (-8, 3).\r
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